Practice Advanced Microprocessors Multiple Choice Questions with Answers Quiz-1

Q.1.

Which of the following is a type of gate descriptor?

a) call gate
b) task gate
c) interrupt gate
d) all of the mentioned

Explanation

Q.2.

Which of the following is a type of system segment descriptor?

a) system descriptor
b) gate descriptor
c) system descriptor and gate descriptor
d) none of the mentioned

Explanation

Q.3.

The gate descriptor contains the information of

a) destination of control transfer
b) stack manipulations
c) privilege level
d) all of the mentioned

Explanation

Q.4.

The gate that is used to alter the privilege levels is

a) call gate
b) task gate
c) interrupt gate
d) trap gate

Explanation

Q.5.

The gate that is used to specify a corresponding service routine is

a) call gate and trap gate
b) task gate and interrupt gate
c) interrupt gate and trap gate
d) task gate and trap gate

Explanation

Q.6.

The gate that is used to switch from one task to another is

a) trap gate
b) task gate
c) task gate and trap gate
d) none of the mentioned

Explanation

Q.7.

The gate that uses word count field is

a) trap gate
b) task gate
c) interrupt gate
d) call gate

Explanation

Q.8.

The memory that maintains the most frequently required data for execution, in a high speed memory is called

a) virtual memory
b) physical memory
c) cache memory
d) ROM (read only memory)

Explanation

Q.9.

The selector field consists of

a) requested privilege level (RPL)
b) table indicator
c) index
d) all of the mentioned

Explanation

Q.10.

If table indicator, TI=then the descriptor table selected is

a) local descriptor table
b) global descriptor table
c) local and global descriptor table
d) none of the mentioned

Explanation

Q.11.

The instruction that is executed at privilege level zero (is

a) LDT
b) LGDT and LLDT
c) GDT
d) None of the mentioned

Explanation

Q.12.

The instruction that loads a selector which refers to a local descriptor table, containing the base address and limit for LDT is

a) LGT
b) GDT
c) LGDT
d) LLDT

Explanation

Q.13.

The descriptor that is used to store task gates, interrupt gates and trap gates is

a) system descriptor table
b) gate descriptor table
c) interrupt descriptor table
d) none of the mentioned

Explanation

Q.14.

The number of interrupt descriptors that the interrupt descriptor table (IDT) handles is

a) 16
b) 64
c) 128
d) 256

Explanation

Q.15.

The number of bytes required for an interrupt in an IDT is

a) 2
b) 4
c) 6
d) 8

Explanation

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